Telephone base unit



FIG. 1 is a front perspective view of a telephone base unit of the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a first side view thereof;

FIG. 5 is a second side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The unevenly-segmented broken lines represent bounds of the claimed design. The evenly-segmented broken lines depict unclaimed environment. The broken lines form no part of the claimed design. 

We claim the ornamental design for a telephone base unit, as shown and described. 